火花避雷器

D1, the 1N4148, acts as a spark arrestor when the contacts of the relay open and eliminates false triggering.

D1的1N4148，作为一个火花避雷器，当打开继电器和接触，消除误触发。

To prevent the risk of fire, only generators with a USDA Forest Service approved spark arrester muffler are allowed on federal land.

为了防止火灾的风险，只有发电机与美国林务局批准的火花避雷器消声器允许在联邦土地。

For reducing the LEMP lighting electromagnetic pulse radiation, the electrical source uses the Box-type power supply arrester, the power supply arrester and the modular power supply arrester as the third SPD surge protection device. The Low-voltage surge arrester or spark gap is laid between the compute net and equipotential grounding grids for avoiding signal interference and counterattack of ground voltage. The parameter and model of the signal lighting-protector of lines of communication are chosen according to the transfer rate, work level and characteristic impedance.

对控制房和DCS柜采用避雷针、独立针的直接雷防护；系统电源分别采用箱式电源避雷器、电源避雷器、模块式电源避雷器作为三级电源保护，减少LEMP雷电电磁脉冲辐射；计算机网络与等电位地网间设置低压避雷器或火花隙防止信号干扰和避免地电压反击；根据传输速率、工作电平、特性阻抗等，选择通信线路的信号防雷保护器的参数和型号。

"In addition, various pilot lights, lightning arrestors, phase protectors and intrinsically safe relays are available as modifications."

此外，作为改型件，还可提供各种指示灯，避雷器，相位保护器和安全火花继电器。收藏反馈

"In addition, various pilot lights, lightning arrestors, phase protectors and intrinsically safe relays are available as modifications."

此外，作为改型件，还可提供各种指示灯，避雷器，相位保护器和安全火花继电器。

"In addition, various pilot lights, lightning arrestors, phase protectors and intrinsically safe relay s are available as modifications."

此外，作为改型件，还可提供各种指示灯，避雷器，相位保护器和安全火花继电器。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。